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arXiv · 2310.03963

Zero-Shot Emotion Transfer For Cross-Lingual Speech Synthesis

Yuke Li·Xinfa Zhu·Yi Lei·Hai Li·Junhui Liu·Danming Xie·Lei Xie
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Abstract

Zero-shot emotion transfer in cross-lingual speech synthesis aims to transfer emotion from an arbitrary speech reference in the source language to the synthetic speech in the target language. Building such a system faces challenges of unnatural foreign accents and difficulty in modeling the shared emotional expressions of different languages. Building on the DelightfulTTS neural architecture, this paper addresses these challenges by introducing specifically-designed modules to model the language-specific prosody features and language-shared emotional expressions separately. Specifically, the language-specific speech prosody is learned by a non-autoregressive predictive coding (NPC) module to improve the naturalness of the synthetic cross-lingual speech. The shared emotional expression between different languages is extracted from a pre-trained self-supervised model HuBERT with strong generalization capabilities. We further use hierarchical emotion modeling to capture more comprehensive emotions across different languages. Experimental results demonstrate the proposed framework's effectiveness in synthesizing bi-lingual emotional speech for the monolingual target speaker without emotional training data.

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Yuke Li, Xinfa Zhu, Yi Lei, Hai Li, Junhui Liu, Danming Xie, Lei Xie. 2023-10-06. Zero-Shot Emotion Transfer For Cross-Lingual Speech Synthesis. https://arxiv.org/abs/2310.03963

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